Leaving your bike unsecured without a reliable bike lock is like leaving your phone on a pub table. Even in busy, well-lit areas, theft can happen in seconds. A quality lock, like those offered by Cluxx, significantly reduces the risk of theft and helps protect your bike on a daily basis. In this guide, discover the different types of locks, their security levels, and best practices for properly securing your bike.
Unfortunately, there is no lock, no matter how high-quality, that can guarantee absolute security, but it does help dissuade most opportunistic thieves. Bike thefts often happen spontaneously: an improperly secured bike is an easy target. A good bike lock requires more time, effort, and tools to break, greatly reducing the likelihood of theft. Cluxx locks are designed to combine strength and ergonomic usability, ideal for urban cycling.

Bike Locks: U-Lock, Chain, Folding
These locks differ in security level, ease of use, and portability, making each suitable for different situations and preferences.
Many manufacturers, like Abus or Kryptonite, use their own scales to measure lock strength. There are also internationally recognized standards to compare the protection levels of different locks.
Sold Secure (UK):
ART (Netherlands):
If no certification is indicated, rely on the type of lock and its construction materials. For example, a tough steel U-lock with minimal gaps is always more secure than a simple cable, even if the cable appears sturdy.
To protect your bike effectively, choose certified Cluxx locks suitable for urban use: explore our range.
A cable lock consists of braided steel wires covered with a plastic coating. This type of lock is lightweight and easy to carry. It’s ideal for short stops, such as securing the seat or a wheel during a quick coffee break. However, thin cables can be easily cut with wire cutters.

Cable locks can be secured either with a key or a combination code.
Cable locks made with multiple braided or twisted wires are the most resistant within this category. However, it is not safe to leave your bike secured by a single cable for long periods out of sight. Use it for short stops, like a café break or a quick errand, or for securing the seat or front wheel. For the frame and rear wheel, choose a more robust lock.
Discover Cluxx Gardia cable locks.
Chain locks are strong and easy to use. They consist of a steel chain covered with a protective sleeve to prevent scratching the bike frame. The ends are connected with a padlock or disc lock.
The reliability of a chain lock depends on chain thickness and lock quality. A thick, hardened steel chain with a quality lock is the most difficult to break.
Small gaps between chain links prevent lever attacks and limit torsion force that a thief could apply. Chains are flexible and thick, making them easier to secure to fixed objects. However, they are generally bulky and heavier than other locks, which can make them less convenient to carry.
Folding locks have a unique design: steel bars connected by rivets that allow flexibility and mobility. This design is particularly useful for securing a bike to irregularly shaped supports.

Folding locks offer a perfect balance : strong and lightweight.
They are lighter than most locks and fold compactly, making them easy to attach to the bike frame or store in a saddlebag. Their security level is medium, making them ideal for those seeking a practical compromise between protection and portability.
U-locks (or D-locks) are generally the most resistant against cutting tools and leverage attacks. Made of hardened steel, they effectively secure the bike frame and rear wheel. A properly sized U-lock, combined with a secondary lock for the front wheel, is a strong security strategy.
The top and shackle are often coated with rubber or plastic to protect the bike’s paint and reduce rattling during rides.
With their reinforced locking mechanism, U-locks can only be forced using power tools, making them highly reliable. The “U” shape also limits leverage attacks, a common method used by thieves.
For optimal protection, choose a U-lock that fits the frame and anchor point without leaving gaps where a crowbar could be inserted. This maximizes security while keeping installation simple.
Explore Cluxx U-locks for reliable urban bike security: full catalogue.

Breaking a U-lock is not easy.
The most reliable models have a double-locking system: even if the shackle is cut, parts remain in place, requiring two interventions to remove the lock.
U-locks offer an excellent balance of security and price. Their main advantages are robustness, weight, and size. Special frame mounts help make transport easier.
Regular maintenance is recommended: clean and lubricate the key components every 2–3 months - the lock cylinder, bolt mechanism, and shackle ends - to ensure smooth operation and extend the lock’s lifespan.
Even the most expensive lock is only part of the solution. Properly securing your bike is equally important to reduce theft risks. Here are some practical tips:
The choice of lock depends on parking location, duration, and bike value. For maximum protection, combine multiple Cluxx locks suited to your needs. A properly secured bike is a safe bike - it stays with you, not a thief.
Gardia 1250K
Locks
17.9€
Cluxx Gardia 1250K Bike cable lock - with key The Cluxx Gardia 1250K bike cable lock, with an 12mm diameter and 150сm length, provides a practical security solution to protect your bike and accessories during urban commutes or bike tours. With its key lock system, it offers reliable protection for short stops, allowing you to ride with peace of mind
Gardia 1200C
Locks
17.9€
Keeper 85C
Locks
34.9€
Keeper 85C Bike Lock - Combination Locking System The Keeper 85C bike lock, featuring a hardened steel chain reinforced with titanium and measuring 85 cm in length, provides maximum security for your bike. Its combination locking system ensures reliable protection against theft attempts. Perfect for securing your bike during extended stops, it offers peace of mind with its robust and durable construction